Q. Type the missing number in this sequence:69, _____, 73, 75, 77, 79, 81
Determine Pattern: We need to determine the pattern in the sequence to find the missing number. Let's look at the differences between the known numbers.73−75=−275−77=−277−79=−279−81=−2The differences between consecutive numbers are consistent, which suggests that the sequence is decreasing by 2 each time.
Apply Pattern: Now let's apply this pattern to find the missing number before 73. If we add 2 to 73, we should get the missing number.Missing number = 73+2
Perform Calculation: Perform the calculation to find the missing number.Missing number = 73+2=75